Mine

titan cyc # git clone --bare source source.git
Initialized empty Git repository in /development/cyc/source.git/
0 blocks
titan cyc # rm -rf source.git
titan cyc # git clone --bare titan:/development/cyc/source titan:/development/cyc/source.git
Initialized empty Git repository in /development/cyc/titan:/development/cyc/source.git/
Warning: Permanently added 'titan' (RSA) to the list of known hosts.
root@titan's password:
Warning: No xauth data; using fake authentication data for X11 forwarding.
error: Could not read 3847b922642c8a783ab98cbdfe6eefc2b75fcd96
remote: Counting objects: 10529, done.
remote: Compressing objects: 100% (3562/3562), done.
remote: Total 10529 (delta 7456), reused 9422 (delta 6606)
Receiving objects: 100% (10529/10529), 47.03 MiB | 4855 KiB/s, done.
Resolving deltas: 100% (7456/7456), done.
<  why might it hang here? > 

1
29690 pts/3    S      0:00  |       \_ /bin/sh /usr/bin/git-clone --bare titan:/development/cyc/source titan:/development/cyc/source.git
29704 pts/3    S      0:00  |       |   \_ git-fetch-pack --all -k titan:/development/cyc/source
29705 pts/3    S      0:01  |       |       \_ ssh titan git-upload-pack '/development/cyc/source'

titan cyc # pwd
/development/cyc
titan cyc # kill 29705
titan cyc # Killed by signal 15.
fetch-pack from 'titan:/development/cyc/source' failed.

[3]+  Exit 1                  git clone --bare titan:/development/cyc/source titan:/development/cyc/source.git
titan cyc #